I have a Pioneer Elite DV47-A and up until now the only disc I had a problem with was the Eric Clapton - "Back Home" Dual Disc. The Flaming Lips -"The Soft Bulletin" wins the award for the most issues. Like the Clapton disc the problem lies in navigation as the main menu screen is inaccessible. However I am able to play all of the content using the search feature on the remote. The following is how it breaks down. After loading the disc push stop, Then;
For MLP 5.1 - push search, 1 and enter, this starts playback of the first track. From here you can access the playlist.
Dolby Digital 2.0 Outtakes - search group 2.
DD 2.0 Radio Sessions - group 3.
For the two videos (also in DD 2.0) Search groups 5 & 6.
The DD 5.1 was a little harder. After searching group 4 - playback of the first track begins, then stops in 4 seconds.

I had to fast forward just a bit for it to start again. Once again from here you can access the playlist. Unfortunately since you can not set up this unit to ignore the DVD-A portion this is the only method I have found. Since I will be primarily listening to the MLP tracks this doesn't concern me that much.
For MLP 2.0 and DD 2.0 I had to switch from 5.1 output to 2.0 in the set up menu of my player, then search groups 1 and 4.
What a royal pain!

@: Lets hope this disc is an exception not a trend. Chances are their new title coming out soon will be similar. I hope this will be a help to some Pioneer owners. I don't know about the Marantz model mentioned above but it may provide an avenue for trouble shooting.
All compatibility issues aside "The Soft Bulletin" is very good. This music is just a natural for surround. The surround mix is better than great. If you are a Lips fan you will love it! My only negative observation is in the first track "Race for the Prize" the surrounds seem a little bright. The rest seems fine (could just be my speaker arrangement) This is one of those titles that you need to crank a little to appreciate the artists intent. I saw them open for "Tool" in the early 90's and have followed their music ever since.